Which genome editing tool is most versatile and easy to use?
A) TALEN technology
B) Zinc finger nuclease technology
C) CRISRP-Cas9 system
D) Homologous recombination
C) CRISRP-Cas9 system
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If a new allele appears in a population, the Hardy–Weinberg formula
(a) cannot be used because no equilibrium exists. (b) can be used but only for two alleles at a time. (c) can be used by lumping all but two phenotypes in one class. (d) can be expanded by adding more terms.
A Weil-Felix test was performed on serial dilutions from a patient bitten by a tick. The results obtained were positive for OX-19 and negative for OX-2 and OX-K. Based on these findings, the organism can be identified as:
a. R. rickettsii. b. O. tsutsugamushi. c. Rickettsia prowazekii. d. Rickettsia typhi.
Place the following events of mitosis in the correct order.
I. Sister chromatids align on the metaphase plate. II. The cleavage furrow forms. III. The nuclear membrane breaks up. IV. Sister chromatids condense. V. Sister chromatids separate. A. I, II, III, IV, V B. III, IV, I, V, II C. IV, III, I, V, II D. III, II, I, IV, V E. IV, I, III, V, II
A region where neurotransmitter molecules
stimulate a neuron is indicated by a. A. b. B. c. C. d. D. e. none of these